CELL : The Unit of Life
1.Cell theory was proposed by
2.Choose the correct statements I. Passive cells are larger in size II. Larger cells have lower surface volume ratio III. To remain active, larger cells are either cylindrical in shape or possess several extensions of the cell membrane, like microvilli IV. Microvilli are found in all those cells, which are active in absorption V. Microvilli (membrane infoldings) occurs in transfer cells found in plants in the region of absorption or secretion of nutrients Option containing all correct statements is
3.Which of the following statement is correct about the cell wall of prokaryotic cell? I. Cell wall, if present, possesses muramic acid II. Cell wall, if presents, possesses acitic acid III. Cell wall is always absent The correct options is
4.In fluid mosaic model of plasma membrane
5.Which of the following cellular organelles is/are bound by a single membrane? Peroxisomes, lysosomes, mitochondria
6.According to widely accepted ‘fluid mosaic model’ cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statement is incorrect?
7.Fat is stored in the plant cell in
8.Polysome is formed by
9.Which one of the following is the correct labelling of given structure of Golgi apparatus?
10.The transport of metabolities across the biomembrane occurs through
11.Read the following statements and identify the correct option given. I. In prokaryotic cell, the nuclear membrane, chloroplast, mitochondria, microtubules and different kinds of pili are absent. II. In eukaryotic cell, the nuclear membrane, chloroplast, mitochondria and pili are present. III. In prokaryotic cell, the ribosome is of 70 S type and in mitochondria of eukaryotic animal cell, the ribosome is 80 S type
12.Which of the following features are correct regarding ribosomes? I. Non-membrane bound II. Absent in plastids and mitochondria III. Present in the cytoplasm and RER IV. Take part in protein synthesis The correct option is
13.The rough endoplasmic reticulum (RER) in the cells are because of the presence of
14.Arrange the following steps in a correct sequence as per Gram’s staining technique I. Treatment with 0.5% iodine solution II. Washing with water III. Treatment with absolute alcohol/acetone IV. Staining with weak alkaline solution of crystal violet The correct sequence is
15.The following diagram shows some of the missing structures in a plant cell (A-E). Identify the structures
16.Identify the components labelled A,B,C,D and E in the diagram given below from the list I to VIII given along with it Components I. Cristae of mitochondria II. Inner membrane of mitochondria III. Cytoplasm IV. Smooth endoplasmic reticulum V. Rough endoplasmic reticulum VI. Mitochondrial matrix VII. Ribosome VIII. Nucleus The correct components are
17.Which of the following differentiate plant cells from animal cells?
18.Which of these is wrongly matched?
19.Identify A to D in the diagrammatic representation of internal structure of centrioles
20.Mesosomes are the infoldings of cells membrane, which I. helps in cell wall formation, DNA replication and respiration II. increases the surface area of plasma membrane III. are present in both prokaryotic and eukaryotic cells Choose the correct option
21.Analyse the following pairs and identify the correct option given. I. Chromoplasts – Contain pigments other than chlorophyll II. Leucoplasts – Devoid of any pigments III. Amyloplasts – Store proteins IV. Aleuroplasts – Store oils and fats V. Elaioplasts – Store carbohydrates
22.The given diagram shows a chromosome Which of the following data refer correctly to the chromosome?
23.Middle lamella is composed of
24.Which of the following enzymes has/have haem as a prosthetic group? I. Catalase II. Carboxypeptidase III. Succinic dehydrogenase IV. Peroxidase
25.Correlate the given features of animal cells (I to VII) with their respective parts (A to N) I. The structure replicates during mitosis and generates the spindle II. Major site for synthesis of lipid III. Power house of the cell IV. store house of digestive enzyme V. Increase the surface are for the absorption of materials VI. Site of glycolysis VII. Site for active ribosomal RNA synthesis The correct option is
26.Glycocalyx (mucilage sheath) of a bacterial cell may occur in the form of a loose sheath called _A_ or it may be thick and tough called _B_ Choose the correct pair from the given option
27.The thylakoid in chloroplast are arranged as
28.Consider the following statements and choose the correct options I. The endomembrane system, include plasma membrane, ER Golgi complex, lysosomes and vacuoles. II. ER helps in the transport of substamces, synthesis of proteins, lipoproteins and glycogen. III. Ribosomes are involved in protein synthesis. IV. Mitochondria help in oxidative phosphorylation and generation of ATP.
29.Select the wrong statement from the following
30.Three of the following statements regarding cell organelles are correct, while one is wrong. Which one is wrong?
31.Go through the sectional view of a mitochondrion showing the different parts and identify the structures A to E
32.‘Omnis cellula-e-cellula’ (all cells arises from pre-existing cells). This concept was given by
33.Which of the following pairs is mismatched?
34.I. It is the extension of plasma membrane into the cytoplasm II. It helps in cell wall formation, DNA replication, respiration, secretion processes, increases the surface area of plasma membrane and enzymatic contents. It also helps in cytokinesis III. It I the characteristic of bacterial cells The above features are attributed to bacteria
35.The plasmid DNA confers certain unique characters to bacteria in which they are found. This include I. resistance to antibiotics II. no resistance to antibiotics III. monitor bacterial transformation with foreign DNA The correct option is
36.Smooth endoplasmic reticulum acts as a major site for the synthesis of
37.Which one of the following organelles is not surrounded by any membrane?
38.Structure of nuclear membrane help in
39.Animal cell contains non-membrane bound organelles called ___ .which helps in cell division
40.Which of the following statements are correct? I. Mycoplasmas are the smallest cells II. Nerve cells are some of the longest cells III. Ribosomes are non-membrane bound organelles found only in eukaryotic cells IV. The cytoplasm is the main arena of cellular activities only in plant cells
41.The RER in the cell synthesised protein which would be later used in building the plasma membrane. But it is observed that the protein in the membrane is slightly different from the protein made in the RER. The protein was probably modified in another cell organelle. Identify the organelle in the given diagram.
42.Mitochondria are semi-autonomous as they possess
43.Many cells function properly and divide mitotically even though they do not have
44.Nuclear membrane is continuous with
45.The main arena of various types of activities of a cell is
46.The fluidity of membranes in a plant in cold weather may be maintained by
47.What is the common between chloroplasts, chromoplasts and leucoplasts?
48.Keeping in view the ‘fluid mosaic model’ for the structure of cell membrane, which one of the following statement is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?
49.Select the correct fundamental features of cell theory I. All cells are basically alike in their chemistry and physiology II. All living organisms are composed of cells and their products III. Each cell is made of a small mass of protoplasm containing a nucleus inside and a plasma membrane with or without a cell wall outside IV. Activities of an organism are the sum total of activities and interaction of its constituent cells Correct option regarding the statement is
50.Spindles are formed by